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TIL a terrier named Igloo traveled to both the North and South Poles in the 1920s as a companion to his human, explorer Admiral Richard Bird. He chased penguins, picked fights with the sled dogs, and had a camel-hair suit made for him to keep him warm. His headstone is shaped like an iceberg.

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neWn7 The most popular artificial material on Earth isn’t steel, plastic, or aluminum — it’s concrete. Thousands of years ago, we used it to build civilizations, but then our knowledge of how to make it was lost. Here’s how we discovered concrete, forgot it, and then finally cracked the mystery of what makes it so strong.
rZXo TIL that after its initial 90-day mission, the Opportunity Mars rover has been active on Mars for 13 years today.
DQple TIL that public primary schools in Britain are required to hold a 'daily act of collective worship' that is 'broadly Christian in nature.'
OYYX TIL that the world’s first Buddhist ruler, Emperor Ashoka, who ruled India form 274-232 BCE, was the first ruler in human history to ban slavery, the death penalty, animal cruelty, and deforestation. He even advocated gender equality in education and religious institutions.
56o8 TIL Gaius gracchus, the ancient roman politician, had a bounty put on his head to the price of the head’s weight in gold. Although the head was delivered, the prize was never paid, as it was discovered that Gaius’ captor had emptied out his brain and replaced it with molten lead.